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this is not the answer this is just a question. is this middle school math?

step-by-step explanation:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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it is true

step-by-step explanation:

all the combinations add up i used   calculator